[AnotherCat]

The installation of OpenCandy and its claimed purpose is clearly set out in the FreeFileSync terms and conditions which are provided for reading when installing FreeFileSync. I know that most, including myself do not read them (I only read them after the usual conspiracy theories started appearing on the internet regarding this). They, in this case, make interesting reading.

Note, I am not making any informed claims as to the actual trustworthiness of OpenCandy and its implementation in the FreeFileSync installer, I am just pointing out that the FFS terms and conditions are open about it being installed and make a claim as to how it is used.

Insofar as when FFS is installed my experience is that when OpenCandy does its thing and additional software is offered, the offered software is offered in the form of a complete window dedicated to the offer without any sneaky pre-ticked checkbox hidden in the corner of the main application's own installation window.

For myself, I have found no difficulty with this and am not too worried by the fact OpenCandy is installed (as BetterRed has said, Malwarebytes, including the free version, will remove it if one is of a distrustful nature) and have not identified any problem associated with it being so.